This program does not care how you carry out your items. You can reuse a plastic bag from home, use a reusable bag, put the items in your purse, or even carry them out in a cardboard box! As long as you are not using one of their plastic bags, your good to earn your reward!
For more information, check out the link below! If you are ordering online, go ahead and order your green bag tag while it's onsale. I do not know if the tag is onsale in store at this time.
"Tag your reusable bag"